1. The shoemaker prays that blessings will be bestowed on everyone.
2. The watchmaker prays for good fortune.
3. The tinker prays a malevolent prayer that God will bring misfortune on someone.
4. The carpenter prays that all will be well.

Answer

A tinker's curse.

This is an early phrase - 'a tinker's curse' (or cuss), which highlighted the reputation tinkers had for habitual use of profanity. This example from John Mactaggart's The Scottish Gallovidian Encyclopedia, 1824, states:

"A tinker's curse she did na care what she did think or say."

N.B. There seems to be another expression: a "tinker's dam" - a small dam of solder made by tinkers when mending pans. It seems a "tinker's curse" was a more popular expression because tinkers were reputed to swear habitually.Hide